/Engine/Plugins/Runtime/XRBase/Source/XRBase/Public/XRMotionControllerBase.h
Returns the tracking status (e.g. not tracked, intertial-only, fully tracked) of the specified controller
Tracking status of the specified controller, or ETrackingStatus::NotTracked if the device is not found
ETrackingStatus GetControllerTrackingStatus ( const int32 ControllerIndex, const [FName](API\Runtime\Core\UObject\FName) MotionSource ) const